Additive percentages

[Neural]

Disclaimer: I'm going to use mL here because 100 divides easily, these are not necessarily actual amounts that I intend to use)

The chart says:
10-30% 4030 adhesion promoter
10% 4012 Reducer.

Which of the following is accurate (assuming 20mL of 4030, cause it's in the middle:

A: for 100mL of paint, I add 20mL of 4030, and then add 10mL of 4012?

or

B: for 100mL of paint, I add 20mL of 4030, and then add 12mL of 4012?

(the difference being that 12mL is 10% of the total weight of the paint plus the 4030).

Also, whichever answer it is, is this the industry standard?

 

[JackEb]

this is one of those questions that appears from time to time. There is a LOT of confusion over the whole 'by volume' that is quoted on the createx website
https://createxcolors.com/pdf/auto-air-illustration-wicked-hard-surface-application-guide_030118.pdf

my interpretation is if i want a total volume of 100ml then i will mix 80ml of paint with 20ml of additive and sufficient reducer to spray well.
If you were painting a whole car then your ratio's would be more critical. I normally just add a few drops of colour to the cup then add sufficient reducer to get it spraying in that sweet spot for the PSI that i am using at that point in time.
with the 4030 i normally go with the 25% of what i have in the cup, so if i have put 16 drops of paint in the cup, i'll add 4 drops of 4030, then add reducer if needed, and only enough to get that sweet spot.
Personally i prefer a 'ratio/parts ' terminology eg 1:2 or 1 part paint:2 part reducer
its much easier to understand
I'd love to hear from others that are more knowledgeable on this question as to what their interpretation is.

 

[Jurien72]

I just go by the milk scale. If it's opaque on the side of the glass, you need more reducer. If it fails to tint the glass, it's too thin!

 

[SiRoxx]

this is one of those questions that appears from time to time. There is a LOT of confusion over the whole 'by volume' that is quoted on the createx website
https://createxcolors.com/pdf/auto-air-illustration-wicked-hard-surface-application-guide_030118.pdf

my interpretation is if i want a total volume of 100ml then i will mix 80ml of paint with 20ml of additive and sufficient reducer to spray well.
If you were painting a whole car then your ratio's would be more critical. I normally just add a few drops of colour to the cup then add sufficient reducer to get it spraying in that sweet spot for the PSI that i am using at that point in time.
with the 4030 i normally go with the 25% of what i have in the cup, so if i have put 16 drops of paint in the cup, i'll add 4 drops of 4030, then add reducer if needed, and only enough to get that sweet spot.
Personally i prefer a 'ratio/parts ' terminology eg 1:2 or 1 part paint:2 part reducer
its much easier to understand
I'd love to hear from others that are more knowledgeable on this question as to what their interpretation is.

Completely agree with Jackie. I posted a very similar question a little while ago.
Quoting in Parts is much easier to understand. But what I’ve come to realise is that the more I paint the less I worry about the quoted %’s. For Candy 2o I mix up about 1ml of 4030 with 4ml of Candy 2o, then reduce. I don’t know how much reducer as I go by test spraying. I’ll add some reducer, give it a try and add more if I can’t get a consistent line.


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[Neural]

Good to know, thank you.